Meson masses and mixing angles in the 2+1 flavor Polyakov quark meson sigma model and symmetry restoration effects

Journal Article · Mon Mar 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.054019· OSTI ID:21409851

Gupta, Uma Shankar; Tiwari, Vivek Kumar ^[1]

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1. Department of Physics, University of Allahabad, Allahabad 211002 (India)

The meson masses and mixing angles have been calculated for the scalar and pseudoscalar sector in the framework of the generalized 2+1 flavor Polyakov loop augmented quark meson linear sigma model. We have given the results for two different forms of the effective Polyakov loop potential. The comparison of results with the existing calculations in the bare 2+1 quark meson linear sigma model, shows that the restoration of chiral symmetry becomes sharper due to the influence of the Polyakov loop potential. We find that inclusion of the Polyakov loop in the quark meson linear sigma model together with the presence of axial anomaly, triggers an early and significant melting of the strange condensate. We have examined how the inclusion of the Polyakov loop qualitatively and quantitatively affects the convergence in the masses of the chiral partners in pseudoscalar ({pi}, {eta}, {eta}{sup '}, K) and scalar ({sigma}, a{sub 0}, f{sub 0}, {kappa}) meson nonets as the temperature is varied on the reduced temperature scale. The role of U{sub A}(1) anomaly in determining the isoscalar masses and mixing angles for the pseudoscalar ({eta} and {eta}{sup '}) and scalar ({sigma} and f{sub 0}) meson complex, has also been investigated in the Polyakov loop augmented quark meson linear sigma model. The interplay of chiral symmetry restoration effects and the setting up of U{sub A}(1) restoration trend has been discussed and analyzed in the framework of the presented model calculations.

• OSTI ID: 21409851
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevD.81.054019; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIPARTICLES
CHIRAL SYMMETRY
CHIRALITY
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CONDENSATES
CONVERGENCE
ETA MESONS
FLAVOR MODEL
KAONS
MASS
MELTING
MESONS
PIONS
QUARK MODEL
QUARKS
SIGMA MODEL
SIGMA PARTICLES
WEINBERG ANGLE
ANTIMATTER
BARYONS
BOSON-EXCHANGE MODELS
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
HADRONS
HYPERONS
MATHEMATICAL MODELS
MATTER
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PHASE TRANSFORMATIONS
PSEUDOSCALAR MESONS
SIGMA BARYONS
SIMULATION
STRANGE MESONS
STRANGE PARTICLES
SYMMETRY